影像科学与光化学 ›› 2004, Vol. 22 ›› Issue (2): 145-153.DOI: 10.7517/j.issn.1674-0475.2004.02.145

• 应用与发展 • 上一篇    下一篇

用CCD测量光密度的新方法

邢刚1, 朱瑞林2, 倪虹1, 陈荣刚3   

  1. 1. 合肥阿波罗数码科技公司, 合肥, 230031;
    2. 北京市遥感信息研究所, 北京, 100011;
    3. 中国科学技术大学, 精仪系, 合肥, 230026
  • 收稿日期:2003-08-29 修回日期:2003-12-02 出版日期:2004-03-23 发布日期:2004-03-23

A NEW METHOD OF MEASURING OPTICAL DENSITY WITH CCD TECHNOLOGY

XING Gang1, ZHU Rui-lin2, NI Hong1, CHEN Rong-gang3   

  1. 1. Hefei Apollo Digital Science and Technology Ltd., Hefei 230031, P.R. China;
    2. Beijing Remote Sensing Information Institute, Beijing 100011, P.R. China;
    3. Precision Machinery and Instrument Department of USTC, Hefei 230026, P.R. China
  • Received:2003-08-29 Revised:2003-12-02 Online:2004-03-23 Published:2004-03-23

摘要: 本文介绍了一种用CCD测量光密度的新方法.利用改变曝光时间t和改变透射率τ对曝光量的改变是完全等价的这一原理,不用借助任何标准密度灰片校准,可在大面积上足够精准地测量物体透射密度.

关键词: CCD, 曝光时间, 透射率, 透射密度, 漫透射密度, 双漫射密度

Abstract: A new method of measuring optical density with CCD technology is introduced.The basic principle is that for exposure changing the transmissivity τ is equal to changing the exposure time t.If the method is used, the calibration of the standard gray scale is not need and the object transmission density on large area can be measured accurately.

Key words: CCD, exposure time, transmissivity, transmission density, diffuse and transimission density, dual diffuse density

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